Licensed project: hazardous waste management (projects that require approval by law can only be carried out after approval by relevant departments, and specific business projects are subject to approval results) General project: retail of hardware products; Wholesale of hardware products; Sales of drawing, calculation, and measurement instruments; Sales of special ceramic products; Sales of metal cutting and welding equipment; Sales of mechanical and electrical equipment; Sales of valves and cocks; Fastener sales; Bearing sales; Sales of bearings, gears, and transmission components; Spring sales; Operation of wires and cables; Sales of machine tool functional components and accessories; Sales of non-metallic minerals and products; Sales of rubber products; Sales of plastic products; Sales of building materials; Sales of building decoration materials; Sales of specialized chemical products (excluding hazardous chemicals); Sales of chemical products (excluding licensed chemical products); Import and export of goods (except for projects that require approval according to law, business activities can be conducted independently based on the business license in accordance with the law)